1641116663 has 2 divisors, whose sum is σ = 1641116664. Its totient is φ = 1641116662.

The previous prime is 1641116639. The next prime is 1641116669. The reversal of 1641116663 is 3666111461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1641116663 - 2²⁴ = 1624339447 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641116669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820558331 + 820558332.

It is an arithmetic number, because the mean of its divisors is an integer number (820558332).

Almost surely, 2^1641116663 is an apocalyptic number.

1641116663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641116663 is an equidigital number, since it uses as much as digits as its factorization.

1641116663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 1641116663 is about 40510.6981302470. The cubic root of 1641116663 is about 1179.5412999761.

The spelling of 1641116663 in words is "one billion, six hundred forty-one million, one hundred sixteen thousand, six hundred sixty-three".